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-rw-r--r--sysdeps/libm-i387/s_sin.S27
1 files changed, 27 insertions, 0 deletions
diff --git a/sysdeps/libm-i387/s_sin.S b/sysdeps/libm-i387/s_sin.S
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+++ b/sysdeps/libm-i387/s_sin.S
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+/*
+ * Written by J.T. Conklin <jtc@netbsd.org>.
+ * Public domain.
+ */
+
+#include <machine/asm.h>
+
+RCSID("$NetBSD: s_sin.S,v 1.5 1995/05/09 00:25:54 jtc Exp $")
+
+ENTRY(__sin)
+	fldl	4(%esp)
+	fsin
+	fnstsw	%ax
+	andw	$0x400,%ax
+	jnz	1f
+	ret
+1:	fldpi
+	fadd	%st(0)
+	fxch	%st(1)
+2:	fprem1
+	fnstsw	%ax
+	andw	$0x400,%ax
+	jnz	2b
+	fstp	%st(1)
+	fsin
+	ret
+weak_alias (__sin, sin)